Manufacture of chains.



G (T. MoGLASHAN & D. WILLIAMS. MANUFACTURE OF cams.

APPLICATION FILED SBPT.-19, 1911.

Patented Jan. 14, 1913.

been conduct ed a,

UNITED; STAgglj iilENT OFFICE.

one?

OTTON MQGLASHAN. OF DUNEDIN, AND DAVID WILLIAMS, 0]? GREYMOUTH,

EW ZEALAND.

MANUFACTURE OF CHAINS.

Application filed September 1 This ltwfi" uto to that protr s o2?manufat-ar w alhc chains 1 til kinds 213' a: apparatus in h'wh separattare pained by casting 12 intermediate links. n are formed by secprocesshas hitherto .z The chain molds 4 1; modeling plate in an n .1. thecores required tor molds being inolded in box with he ctional halt link'l he o; ,n plated in the mold by lztdill i a n ing plate zit-d thelituiid metal poured into the mold hrough rhannrls.

The plt tlli invention to the manufacture of chains having stud barsarross the links. and consists in the in roved pro '|.;ahereinotterdescribed.

The proc s wil be evident from the follo ing description to keninconiunrtion with the accompanying drawings. in which-- Figure l is alongitudinal vertical sectional view of the mold taken on the line l--1of Fig. 2!. and showing the patterns and links in place; Fig. 2 is aplan view showing one of the mold boxes with the pattern therein andindicating a dome of sand mold up upon the pattern; Fig.- 3 a transverseI -ction taken on the line 3-3 of Fig. '2 the stage of the process shownin and Fig, i is view of the split with and til t the nlttll't('t oitional patteins.

have been moldro upper and lot or completing the (I a c r:- pat t eriw.

relates particularly g out he petmold-box 5 ant winch may be t 1 tie t tS and Jan Q. a hulls a split iattern 9 comp epara le halves is used. theproiectto arming the stud bars.

The proress is carried out as follows: The pattern fl is joined up withprawionsly cast links 12 and placed on the sand in the bot an ordinaryS'pe eification of Lettersrlatent.

l l l l l l l l l l l l l i l link are provided Patented Jan. 14, 1913.

Serial No. 650,291.

tom mold box 6. the sand normally extending to the level 14 and beingmolded up about the pattern to a distance as indicated by the dottedline 15 of Fig. 1, whereby a dome of sand is formed having an appearanceas shown at 10 inl igs. 2 and 3, said dome covering all but the upperand end faces of the pattern. The upper mold box 3 is then placed inposition and sand is placed therein and rammed, a runner 17 beingprovided. The molds are then turned over, the mold box t3 cominguppermost and being removed and the sand knocked out. Sand is now againmolded up about the pattern until another dome is formed. this dome alsohaving an appearance as indicated at to in Figs. 2 and 3. It is to benoted that now a sort of core is formed extending in one/direction tothe dotted line 15 and in the other to the dotted line 18 shown in Fig.l. The mold box 6 is again placed in position and sand rammed thereinaround said core. The box 6 and the sand therein are carefully withdrawnexposing one side of said core and pattern. The half of the pattern thenuppermost is removed and the box 6 and the sand therein carefullyreplaced. The mold is again reversed. the box 5, now becoming uppermost,is removed, the remaining half of the pattern is removed, and the box 5with the sand therein is replaced. After being cottered and weighteddown. the mold is ready for casting.

Tn carrying out the invention the separate links are cast in molds orchills in the well known way.

The mold boxes may be made of such an area as to permit of any desirednumber of patterns and links being arranged therein in the propermanner. Ordinary molders sand is used.

The boxes used in making the connecting with openings in their the madesections extendthe known 100 edges to permit of ing in between theboxes. in manner.

We claim as our invention: y

t. The herein described process of preparing molds for chain links, saidprocess comprising placing in the sand of the first 1015 mold box adivided link pattern. the plane of division of the pattern beingsubstanliallv flush with he sand; molding up the sand to cover all butthe u per and en faces of the pattern; placing t 2 second bot;

on the first and packing the second box with sand; re ersing the moldand removing the first box and then the sand therefrom; molding up thesand in the second box to cover all but the upper and end faces of thepattern; replacing and packing the first box with sand; removing saidfirst box; retaining the sand therein; removing the upper halt of thepattern; replacing the first box: reversing the mold; removing thesecond box and the remaining half of the pattern; and then replacing thesecond box.

2. In the manufacture of chains and the casting of the links thereof,the herein de scribed process for preparing the molds for the castings.said process consisting in placing, in th sand of the first mold, box. adivided link pattern and cast links linked in the link pattern, theplane of parting of the pattern being flush with the level of the sand;niolding up the sand to cover all but the upper and end faces of thepattern; placing the second mold box on the first and packing the secondbox with sand, a runner being provided; reversing the mold. so that i ll l l I l l l r the first box is on the top: removing the said first boxand then the sand therefrom: so that half of the pattern is exposed:molding up the sand so as to cover all but the upper and end faces ofthe pattern; replacing and packing the first box with sand: removing thesame retaining the sand therein: removing the upper half of the pattern;replacing said first box and sand and reversing the mold; removing saidsecond box and the remaining half of the pattern; and then replacingsaid second box.

In testimony whereof, We ha \e signed this specification in the presenceof two subserili ing Witnesses.

Nilnesses as to the signature of George Cotton \lctllashanr 'l. H.'lnoaueamn T. l. ALUEQONQ \Vitnesses t) the signature of i f snl dW'il'liams:

A. A. \Vrmov. A. (l. TlfClilll l

